Device for pressing articles



Aug.v 12, 1930. P. c. CHRISTIANSEN DEvIbE FOR PRESSING ARTICLES Filed Feb. 25, 1929 I). Visi'lknsen n ap Patented Aug. 12, 1930 UNITED STATES PATENT OFFICE mun cnarsrmi cnarsrnmsnu, or cornnnseim, nmmx nnvrcn ror. rnnssme annex-Es aussuEn Application fled February 25, 1929, Serial No. 342,623, and in Denmark March 1, 1928.

Devices are known by which the imprint-.

ing of articles is carried out thereb that a non-rotating blank is pressed aroun a simi- 'larly stationary count-er pressure member of a suitable cross-section by means of a number of rotating pressing members located with equidistant intervals around a common axis of rotation identic with the axis of the counter pressure member. In these known devices spring force is employed to press the rotating pressing members a ainst the blank, but this gave rise to the de ciency that the pressure of the pressing members against the blank increases when the diameter of the blank increases. If e. g. a blank is pressed over a conical counter pressure member, the pressure with which the pressing members act upon the blank becomes greater andgreater as the pressing proceeds to broader and broader portions of the cone. B the present invention this defect is avoide the'invention having forits object that the spring or tightening member pressing the pressing memberagainst the counter pressure member is pivotally mounted in an axial plane and may be kept in anyswung position. Blanks may, therefore, be pressed around a counter ressure member without the pressure 0 the pressing member against the blank becoming dependent of the radius of the latter, or pressing may be carried out over counter pressure; members with varying diameter without varying the pressure of the pressing member upon the blank, when only the spring is able to be swung to varying positions during the pressing. In the ollowing a couple of examples of constructional forms of the present invention shall be iven in order to further explain the invention, ref 40 erence being had to the accom anying drawing, in which Fig. 1 is a agrammatical elevation of a constructional form of the invention, partly in section, and Fig. 2 is an elevation of another constructional form, partly in section. In Fig. 1, 1 is a which they are countersunk, as shownin located so as to be both displaced and mint 4 (not shown) are approached to each carrier rotating about an axis identical. with that of the counter pressure member and carrying the several parts of the device, which carrier is called, for shortnem sake, the tool carrier throughout the specification and claims; 2 designates two pressing members slidably mounted in holes in the tool carrier, the expression pressing members meaning the combination of the actual part acting upon the blank (pressin steel, molette, etc. 65

and the carrier or sha t with which suc parts are often connected (by welding, soldering, screwing or in another way). 3 is the blank, and 4 the counter pressure member. The pressin members 2 are pressed towards the axis 0% rotation ofthe device by springs 5 shown in the drawing as laminated springs, the laminae of which are kept together at one endby spring carriers 7 The springs 5 are pivotally mounted on pivots '6 connecting them with the tool carrier 1,t'lin 1e drawing, so that near the pivots 6 the do not normally project from the surface 0 the tool carrier 1. A ring 8 surrounds the tool carrier and springs 5 or rather their carrlers 7. The ring 8 may be displaced in the three- .tion of the axis of rotatlon by means of a fork 9. In a central bore a press rod 10 is ed'relatively to the tool carrier 1. A spring resses the outer somewhat broader end of tlie press rod against the blank 3, which rests on the counter pressure member 4. The device acts in that way that both the counter premure member 4 and the blank 3 remain without rotation, while the tool carrier 1 is caused to rotate. When, now, the counter pressure member 4 and the tool carrier 1, guided if wanted in a suitable machine,

other, so that their y axes remain coinciding, the press rod 10 will first touch the blank and press it firmly against. the counter pressure member 4. Thereafter also the pressing members will come into contact with the blank and ress still new portions thereof against the si es of the counter pressure member, as the latter and the tool carrier approach each other successively more and more. If the springs 5 were clamped in an invariable position, they would exert a steadily increasing pressure upon the pressing members 2, as these members act on an increasing radius. It is this fact that had for its result in the known devices that even by a very abundant lubrication the (pressin members seized at least the blank an spoiled it. According to the present invention the tension of the springs may be released suecessively thereby that the ring 8 is moved backwards, which ma take place automatically, if so wanted. ccording to Fig. 2 the pressin members are pivoted to the tool carrier 1 y pivots 12. The counter pressure member 4, springs 5, which are kept by spring carriers 7 and pivotally mounted on ivots .6,

- and press rod 10 correspond to simi ar parts in Fig. 1. The press rod 10, however, is not here spring-loaded but influenced by a loaded lever 11. The ring 8 surrounds the springs 5 or rather the spr ng carriers 7 and is displaced in the axial direction by the fork 9, which is 'slidably mounted in a fork carrier 13. Instead of being freely pivoted and supported, besides, in a movable point (viz by means of the ring 8) as in the shown constructional forms, the springs 5 may be pivoted and kept in any positlon in many other ways. For instance the movable supporting point corresponding to the ring 8 may be displaced for each of the sprin (spring carriers) to the opposite side of t e'pivot 6 of the spring in question, so-that the springs are loaded as two-armed levers. Also the springs may be simply held by auitable screw device. The manner in WhlOh they are secured in the constructional examples seems, however, to be the preferredone, but may be so changed, if wanted, that the pivots 6 are replaced by projectt1 ons over w ich the spring carriers may oscilate with a corresponding recess, so that the springs may be easily re laced. In the drawing both constructional orms are shown as having two pressing members 2 diametrically opposite to each other. The device may,

however, also be constructed with more than two pressing members or with only one pressmg member, the one-sided pressure of which upon the blank must, then, be counter-balanced in a suitable manner as e. g. by a clam mg '(lBVlOG. When the springs are tolerably long and allow the pressing members to be swung out into their utmost positions without making the pressure on the pr 'ng members too great, they may be rigidly secured at their upper ends insteadof being pivotally mounted on pivots 6. The adjustment of the pres sure of the springs on the pressing members ma nevertheless be carried out by an axially 'splaoeable ring 8 or the like, as in the delatter and their points 0 vices specified above. The invention may be varied in man other ways, both as regards the shape of t e individual parts and as regards the manner in which they are combined.

I claim 1. An article pressing device for use in connection with a non-rotating blank including pressure members, a rotatable carrier for said pressure members, ressure exerting means mounted to swing 1n an axial plane with respect to said carrier and coacting with the pressure members to move the latter in the direction of the blank, and means for varying the position of the pressure exerting means with respect to the carrier.

2. An article pressing device for use in connection with a non-rotating blank includin g pressure members, a rotatable carrier for sa1d pressure members, pressure exerting means mounted to swing in an axial plane with respect to said carrier and coacting with the pressure members to move the latter in the direction of the blank, and means for varying the position of the pressure exerting means with respect to the carrier, whereby to vary the degree of pressure exerted on the pressure members.

3. An article pressing device for use in connection with a non-rotating blank including pressure members, a rotatable carrier for sa1d pressure members, pressure exerting means mounted to swing in an axial plane with respect to said carrier and coacting with the pressure members to move the latter in the direction of the blank, and means for varying the position of, the pressure exerting means with respect tothe carrier, said last mentioned means being movable axially of the carrier and coacting with the pressure exertin means to vary the pressure exerted by the atter.

4. An article pressing device for use in connection with a non-rotating blank includin g pressure members, a rotatable carrier for sa1d pressure members, pressure exerting means mounted to swing in an axial plane with respect to said carrier and coacting with the pressure members to move the latter in the direction of the blank, and means for varying the position of the pressure exerting means with respect to the carrier, and means coacting with the pressure exerting means and movable between the Fivot points of the engagement with the pressure members for varyingthe pressure exerted on the latter by the pressure exerting means.

5. An article pressing device for use in connection with a non-rotating blank including pressure members, a rotatable carrier for sa1d pressure members, pressure exerting means mounted to swing in an axial plane with respect to said carrier and coacting with the pressure members to move the latter in the direction of the blank, and means for varying the position of the pressure exerting means with respect to the carrier, said ressure exerting means being counterin said carrier and regulating means associated with the pressure exerting means movable along said carrier.

6. An arran ement as claimed in claim 1, characterized m that said ressure exerting means is secured at one en so as to be mov- 0 able in axial planes whereby the adjustment of the pressure exerted by the ressure exertin means may be varied by c angingthe free ength' thereof.

In testimony whereof I afiix my si ature.

PAUL CHRISTEII CHRIST SIN- 

